What causes blood in stool

If stool with blood, then it is likely due to defecation, caused by anal fissure, may also be caused by hemorrhoids bleeding, bleeding is generally bright red blood. If stool with blood is dark red blood, there may be caused by digestive tract tumors, such as esophageal cancer, stomach cancer, intestinal cancer bleeding, will show stool with blood symptoms. In addition, intestinal mucosa necrosis or intestinal mucosa shows obstruction, also will show stool with blood symptoms, there is ulcerative colitis, digestive tract polyps, such as rectal polyps, intestinal polyps, polyps rupture, also can cause bleeding. Therefore, once stool with blood, it is best to go to the hospital for a systematic examination, clear cause of disease and symptomatic treatment.